In the dividing and connecting operation of area power network reconstruction,which is a decisive condition that the operated equipments are in the same power supply section. To deciding the safety and feasibility,a whole network supply area is analysized before operating, which can determine the power supply section of the operated equipments. A network remodeling algorithm based on the supply area constraints is proposed and operation experience is considerd in the form of constraint condition, which reduce the optimization space. This is to avoid uninformed search in the heuristic algorithm and this method can avoid getting into the local optimum. The network remodeling algorithm can also be used as the basic function modules for other advanced software, which provides support for various application.